Synthetic Jet Characteristic Velocity Estimated nn The Basis of Momentum Flux Measurement

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F18%3A00487328" target="_blank" >RIV/61388998:_____/18:00487328 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.14311/TPFM.2018.023" target="_blank" >http://dx.doi.org/10.14311/TPFM.2018.023</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/TPFM.2018.023" target="_blank" >10.14311/TPFM.2018.023</a>

Result language

angličtina

Original language name

Synthetic Jet Characteristic Velocity Estimated nn The Basis of Momentum Flux Measurement

Original language description

The paper compares two methods of evaluation of synthetic jet characteristic velocity. The first method of the characteristic velocity estimation is based on a simple measurement of the synthetic jet momentum flux (the jet thrust) by means of precision scales. The second method is a standard one, it is based on spatial-temporal integration of the velocity profile at the synthetic jet actuator nozzle exit. The velocity profile was obtained here using hotwire measurements in air. Comparison of the methods is based on dimensionless stroke length of the synthetic jet. It is confirmed that the results of both methods are nearly the same for higher dimensionless stroke length. On the other hand, if the jet regime approaches to the synthetic jet criterion threshold (i.e. to the dimensionless stroke length of 0.5) the results of both methods diverge. Using the current results a correction is suggested for the momentum-flux-based method to match the standard one.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

<a href="/en/project/GA16-16596S" target="_blank" >GA16-16596S: Optimization of pulsatile jet actuation in fluid mechanics</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Topical problem of Fluid Mechanics 2018

ISBN

978-80-87012-65-9

ISSN

2336-5781

e-ISSN

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Number of pages

8

Pages from-to

175-182

Publisher name

Ústav termomechaniky AV ČR, v. v. i.

Place of publication

Praha

Event location

Praha

Event date

Feb 21, 2018

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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